Boys, it wasn’t the airplanes that got him [D-Wave], twas beauty [gate model quantum computers] that killed the beast.– last line of the prescient 1933 movie, “King Kong”.
I am fairly confident that DWave will implement a more versatile Hamiltonian soon, but that won’t solve the problem they have that they are operating at a temperature above the energy gap. – Peter Shor, Jun 24, 2014, source of quote
… they [D-Wave] use qubits with very short coherence times of the order of a few nanoseconds, while the total time to perform one annealing run is 20 microseconds. The qubits are thus coherent for only a fraction of the total time, and this raises the question whether they are “coherent enough” or “quantum enough” to show a quantum speedup. –Matthias Troyer, June 19 2014, source of quote